In previous videos we had seen how to turn on LED while.
Let's see what circuits to do to turn several LEDs simultaneously, using the pulse generated only by a LED or a motor with the same pulse.
Let's see how they do.
When circuits as would assemble sequence LED, we saw that the output of the 555 we used it to light a single bulb and the time to watch the second integrated.
But just we used to light a LED.
Similarly, all these outputs used them to turn a single LED.
We will use each output of these to light several LED, a motor, a buzzer or activate a relay.
Take the exit leg 3 in this case, allowing light a single LED, and the output of any circuit We had a 1k resistor entering the base of an NPN transistor which in this case it is that we always use the 2N2222A.
The issuer connect it to ground.
And from the power supply We connect a resistance of 100 OHMS and five LEDs in series.
The little stream that I can attend at exit amplifies it and let the full 12 volts with a maximum in this case 800mA, which is able to handle this transistor.
This series of LED on average handles 20mA and how I can handle 800 mA with this transistor, I can keep putting those same series.
I can put another set same, 100 ohm resistor and the five LEDs in series.
I can continue.
I repeat this series of five LEDs connected with the positive resistance and the collector of transistor.
I can do it for 40, 50, 100 LED.
Another option is to connect this output to power an engine.
We do exactly the same.
Resistance to be the base of transistor, The emitter of transistor is connected to ground or negative, collector and connect the motor directly to the 12 volts.
When connecting any motor coil, we must place a protection diode, It may be the 1N4004.
When this output, which becomes the entrance, a small pulse is generated, the active base, and allowed to drive between collector and emitter, closing the motor circuit; by running directly with 12 volts and current need.
No voltage, but the small stream that is delivering this output.
Otherwise, we do exactly the same thing, it is to connect a relay.
We repeat the same thing, only connect the relay between 12 volts and the collector using the protection diode, and between the relay contacts We can connect a cylinder of either 110 or 220 volts.
Also several engine horsepower, a pneumatic cylinder or whatever I want.
This output is going to last LED the fifth LED in this case, there also we get a 1K resistor going to the base of the transistor to the middle pin.
The left, which is the issuer, goes with this white ground wire.
The collector output, which is the blue wire, will the entire array of LED in which series are five LED and finally a 100 ohm resistor connected to positive.
The 100 ohm resistor is brown, black, coffee, finished in gold.
We connect a resistor for each set of five LEDs.
Connect the power supply.
Hence we see that when the sequence reaches the last LED entire array LED lights we have made, using the transistor amplifies the current.
This never could do directly from the output of integrated.
The output of the chip we bring the green wire.
We had a 1k resistor, we connect the transistor, the transistor is grounded by the issuer, place the protection diode collector-positive, and connect the motor between positive and the transistor collector.
We put energy and we can see that not affected the last pulse, which is what we are using to light the LED, the engine and all we want.
If I repeat the same thing for ten outputs of 4017 and I arranged LEDs, I can make a very long series that goes by the same sequence more than 100 LED.
It's just a matter of organizing them.
What we do in cases where we used circuits like this, which is the touch sensor, where it is not clear an output pulse.
What you should do is disconnect this ground point, We remove this ground point issuer and that's the one we use output to connect the amplifier circuit.
We make this connection.
So the sender the last touch detector transistor is output to power the new circuit to turn not only one but several LED.
They will realize that most circuits end the same way, you just have to do this variant.
If I wanted to turn an engine I do exactly the same.
Connect the circuit with the variant and work.
If I wanted to light a bulb 110 or 220 volts I do the same variant and work.
Here is the link connecting a relay that we had already seen in several videos and connecting the bulbs.
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